KJ20F-C01 Air Purifier for Automobile
The Legom KJ20F-C01 Air Purifier for Automobiles is a purpose-built in-car air purifier delivering professional-level purification within the vehicle cabin. Operating on DC 12V at 13W, the KJ20F-C01 integrates an electrostatic module with dedicated formaldehyde-removal and ozone-removal sub-modules, a built-in real-time particulate matter sensor, and automatic three-level air volume adjustment — all in a compact 246.5 × 156.5 × 83.7mm unit weighing only 800g.
Available in three colors, the KJ20F-C01 starts and stops automatically with the vehicle, requires no filter consumables, and achieves ≥95% PM2.5 efficiency — removing dust, pollen, bacteria, viruses, formaldehyde, benzene, and cigarette smoke from the enclosed cabin air space. It is particularly suited to drivers and passengers with allergies or sensitive respiratory tracts, and to new vehicles where cabin off-gassing from upholstery, plastics, and adhesives is a concern during the initial ownership period.
Key Benefits
- ≥95% PM2.5 efficiency – Electrostatic integration module captures fine particulate matter including dust, pollen, bacteria, and viruses at ≥95% efficiency within the enclosed vehicle cabin air volume
- Integrated formaldehyde and ozone removal modules – Dedicated sub-modules within the electrostatic integration system specifically target formaldehyde from new vehicle off-gassing and ozone from urban traffic environments, providing cabin air quality beyond what PM filtration alone achieves
- Real-time particulate matter sensor – Built-in PM sensor continuously monitors cabin air quality and feeds data to the automatic air volume control system, enabling the purifier to respond immediately to detected air quality changes
- Three-level automatic air volume adjustment – The purifier automatically selects from three fan speed settings based on real-time sensor readings, increasing output when PM or pollutant levels rise and reducing it when cabin air is clean — optimizing purification without requiring manual adjustment
- Starts and stops with the vehicle – Wired to the DC 12V vehicle supply, the KJ20F-C01 activates automatically when the vehicle starts and shuts off when it stops, requiring zero driver interaction for daily operation
- No filter consumables – Electrostatic purification requires no replaceable filter cartridges, reducing ongoing ownership cost and eliminating the need to track replacement intervals
- Cigarette smoke and odor elimination – Effectively removes cigarette smoke, food smells, and other cabin odors, maintaining a pleasant environment for both driver and passengers
- Compact and lightweight at 800g – Fits on the dashboard, center console, or rear seat area without obstructing the driver’s field of view or occupying significant cabin space
- Three color options – Available in three colors to complement different vehicle interior styles
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | KJ20F-C01 |
| PM2.5 Efficiency | ≥ 95% |
| Power | 13W |
| Rated Voltage | DC 12V |
| Purification Technology | Electrostatic integration module (formaldehyde removal + ozone removal) |
| Air Quality Sensor | Built-in PM sensor (real-time) |
| Air Volume Control | 3-level automatic adjustment |
| Operation | Starts/stops with vehicle; press to activate |
| Consumables | None |
| Dimensions | 246.5 × 156.5 × 83.7mm |
| Weight | 800g |
| Color Options | 3 colors available |
Application & Use Cases
- New vehicle cabin off-gassing – New cars release formaldehyde and VOCs from upholstery, dashboards, carpets, and adhesives for months after manufacture. The dedicated formaldehyde removal module addresses this directly, reducing exposure to new-car chemical off-gassing during daily driving
- Urban driving in high-pollution environments – In cities with heavy traffic and elevated PM2.5, NOx, and ozone levels, the KJ20F-C01 continuously filters incoming and recirculated cabin air, reducing occupant exposure to urban air pollutants even with windows closed and AC recirculation active
- Allergy and asthma management during commutes – Pollen season and high-allergen periods create significant exposure risk during driving. The ≥95% PM2.5 efficiency captures fine pollen particles and allergens from the cabin air throughout the commute
- Rideshare and taxi vehicles with multiple daily passengers – High passenger turnover introduces bacteria, viruses, and odors repeatedly throughout the day. The automatic purification cycle restores cabin air quality between passengers without driver intervention
- Families with children or vulnerable passengers – Children, elderly passengers, and immunocompromised individuals benefit most from reduced pathogen and allergen load during vehicle journeys
- Long-distance driving and road trips – Extended time in the enclosed cabin environment makes air quality more significant — continuous automatic purification throughout long journeys reduces fatigue-contributing pollutant exposure
Installation Notes
- Place the KJ20F-C01 on the dashboard, center console, or rear seat area in a stable position where it will not shift during driving. Ensure the air intake and outlet vents are unobstructed
- Connect to the vehicle’s DC 12V supply — typically via the cigarette lighter socket or a dedicated 12V outlet. Confirm the vehicle’s socket output matches the unit’s 13W power requirement
- For automatic start/stop with the vehicle, connect to a socket that powers on with the ignition. Sockets that remain powered when the vehicle is off will not provide automatic operation
- Do not position the unit where it obstructs the driver’s field of view through the windscreen or side windows, or where it could become a projectile in emergency braking
- No filter replacement is required. Periodic cleaning of the electrostatic module is recommended — contact the Legom team for the recommended cleaning interval and procedure
- The unit can also be activated manually by a light press of the power button regardless of vehicle ignition state, when connected to a powered socket
Frequently Asked Questions
Does the KJ20F-C01 replace the vehicle’s built-in cabin air filter?
No. The KJ20F-C01 is a supplementary purification unit that works alongside the vehicle’s existing cabin air filtration system. The vehicle’s built-in cabin filter (pollen filter) captures particles entering from outside through the AC and heating intake. The KJ20F-C01 purifies the air already inside the cabin — removing pollutants introduced by passengers, off-gassing from interior materials, and particles that bypass the cabin filter. Both systems serve complementary roles and are most effective when used together.
How does the three-level automatic air volume adjustment work?
The built-in PM sensor continuously measures cabin air quality in real time. The KJ20F-C01 uses this reading to automatically select from three fan speed settings: low speed when cabin air is clean, medium speed when PM levels are moderately elevated, and high speed when PM concentration is high. This automatic response means the purifier works harder when passengers enter the vehicle, when windows are briefly opened in polluted traffic, or when odors or smoke are present — without requiring the driver to manually adjust settings.
What odors can the KJ20F-C01 remove?
The electrostatic integration module with formaldehyde and ozone removal sub-modules effectively targets cigarette smoke, food smells, pet odors, and chemical odors from new vehicle materials. The electrostatic and formaldehyde removal modules capture and neutralize odor molecules and harmful gases, rather than simply masking them with fragrance.
Is the KJ20F-C01 suitable for electric vehicles?
Yes. The KJ20F-C01 operates on DC 12V, which is available in all passenger vehicles including battery electric vehicles (EVs) through the 12V auxiliary battery system. The 13W power consumption is negligible relative to the EV’s total power budget. For EVs with new-car chemical off-gassing concerns from interior materials, the formaldehyde removal module is particularly relevant as EVs often use significant quantities of synthetic interior materials.
What maintenance does the KJ20F-C01 require?
No filter consumables need to be replaced. The electrostatic module captures particles on collector plates that will accumulate over time and should be cleaned periodically. Cleaning typically involves removing the electrostatic module and washing the collector plates with water. Contact the Legom team for the recommended cleaning frequency based on your typical driving environment and daily usage hours.
OEM & ODM Customization
Legom supports OEM and ODM services for the KJ20F-C01 Car Air Purifier. Our engineering team can customize dimensions, color options, specifications, and branding for automotive OEM and aftermarket requirements. All customization projects are handled with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.
User Manual
Product information last reviewed by the Legom Technical Team. For the most current specifications, refer to the official datasheet or contact our sales team.
Custom OEM & ODM Solutions
Legom is a direct manufacturer offering end-to-end OEM and ODM services. With our in-house engineering and production capabilities, we work closely with distributors and system integrators to deliver fully customized solutions under strict NDA.
